Top Consumer Financial Protection Bureau officials instructed the bureau’s communications staff to conceal a June appearance by acting Director Mick Mulvaney before a Republican state attorneys general organization that opposed the bureau’s payday lending rule, according to emails obtained by Bloomberg Law.

Emails obtained by liberal consumer group Allied Progress show that two top staffers in the CFPB’s external affairs division, Anthony Welcher and Zixta Martinez, instructed communications staff not to tell reporters in advance about a June 9 appearance...